Listed Here, A refers back to the potential value of the expense; P refers to the principal amount to get invested; r refers back to the fee of interest; n refers to the amount of periods the interest receives compounded on a yearly basis; t refers to the tenure (in https://www.google.com/maps/d/u/0/viewer?mid=1o3vHoDG_5EIkMXyD_8nuLLiHqxZbkJg